<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>CSS Test: Margin Collapsing with Clearance</title>
  <link rel="author" title="Microsoft" href="http://microsoft.com/"/>
  <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#flow-control"/>
  <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins"/>
  <style type="text/css">
    div.target1 { position: absolute; left: -15px; height: 50px; width: 0; border-left: 10px solid yellow; top: 0px; }
    div.target3 { position: absolute; left: -15px; height: 50px; width: 0; border-left: 5px solid orange; top: 100px; }
    div.target4 { position: absolute; left: -10px; height: 50px; width: 0; border-left: 5px solid silver; top: 100px; }
    div.container { width: 150px; position: relative; margin-left: 20px; border: solid thin; }
    div.box1 { height: 50px; margin: 0; background-color: yellow; }
    div.parentof2and3 { margin: 0; background-color: silver; padding-right: 10px; }
    div.box2 { display: none; }
    div.box3 { margin-top: 50px; height: 50px; background-color: orange; }
  </style>
 </head>
 <body>
  <p>The coloured bars on the left should match the coloured boxes in the black box.</p>
  <div class="container">
    <div class="target1"></div>
    <div class="target3"></div>
    <div class="target4"></div>
    <div class="box1">A</div>
    <div class="parentof2and3">
      <div class="box2">B</div>
      <div class="box3">C</div>
    </div>
  </div>
 </body>
</html>
